Investor · Madison, WI

John P. Hamill

Open John in the network graph →

Filings

2

SEC Form D

Connections

19

co-filers

Capital

$10.8M

across filings

Active

Oct 2017

to Dec 2025

Most-connected co-filers (19)

John Neis · NOVI, MI1 shared Bernd Seizinger · Harpswell, ME1 shared Oren Gilad · Doylestown, PA1 shared Peter J. Ogren · Burlington, MA1 shared Lou D. Canakes Ii · New York, NY1 shared Jean-Pierre Bizzari · Holon, L31 shared James V. Caruso · Florham Park, NJ1 shared Stephen A. Hill · Florham Park, NJ1 shared Jarrod J. Longcor · Florham Park, NJ1 shared Stefan A. Loren · Florham Park, NJ1 shared Michael Grissinger · London, United Kingdom1 shared Rifat C. Pamukcu · Hummelstown, PA1 shared Richard P. Peters · Doylestown, PA1 shared Marc P. Duey · Doylestown, PA1 shared Gabriela P. Gruia · Doylestown, PA1 shared John B. Henneman · Austin, TX1 shared Douglas J. Swirsky · Madison, WI1 shared John E. Friend Ii · Madison, WI1 shared Frederick W. Driscoll · Madison, WI1 shared

Recent filings (2)

Aprea Therapeutics, Inc.Dec 2025 · 20 co-filers$5.8M Aprea Therapeutics, Inc.Dec 2025 · 20 co-filers$5.8M Cellectar Biosciences, Inc.Oct 2017 · 18 co-filers$7.8M Cellectar Biosciences, Inc.Oct 2017 · 18 co-filers$7.8M

Derived from public SEC Form D (Reg D) filings; entities resolved probabilistically. See John in the interactive graph →